CN102157287A

CN102157287A - Safety protection switch

Info

Publication number: CN102157287A
Application number: CN2011100707998A
Authority: CN
Inventors: 赵福希
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-23
Filing date: 2011-03-23
Publication date: 2011-08-17

Abstract

The invention relates to a safety protection switch. The switch comprises a base and a cover plate covering the base. The switch is characterized in that switching tube pins, a contact piece and a button assembly are arranged in the base; the switching tube pins are vertically arranged in the base and the bottom ends of the switching tube pins extend out of the bottom of the base; the button assembly comprises a pressing part with upper end extending out of the cover plate; a spring is arranged in the pressing part; the contact piece is fixed at the side of the pressing part and is fit with the upper parts of the switching tube pins; the pressing part is pressed and then drives the contact piece to slide downwards so that the surface of the contact piece is contacted with the two corresponding surfaces of the switching tube pins in a sliding manner; and a dustproof component is arranged on the part protruding out of the cover plate, of the pressing part on the cover plate. The switch has the following effects: the switch adopts a sliding type junction and can miss the dust when meeting the dust due to sliding of the junction, thus further ensuring long-term validity of the product; and meanwhile, each contact part is provided with a plurality of contact pins, thus substantially improving the reliability of the product relative to the switch with one junction.

Description

The security protection switch

Technical field

The present invention relates to a kind of switch, be meant a kind of sensitive switch that is used on the protection alarm device especially.

Background technology

Sensitive switch on the fire protection warning device is in not user mode for a long time under the normal condition, if the state of emergency is used, need guarantee that switch is in shape.As Fig. 1, traditional switch product contact position A adopts the silver point structure, and is arranged above and below, the switch pin is connected with the contact respectively, switching tube underfooting end stretches out in the base bottom, and button is pressed during contact, the conducting of contact conducting of upper and lower contact and then realization switch pin.When button does not use for a long time, product contact portion may fall into dust or foreign matter, thereby loses efficacy when causing product promptly to use.

Summary of the invention

The problem that the present invention need solve provides a kind of safe and reliable sensitive switch that is suitable for using on the protection alarm device.

For solving the problems of the technologies described above, the present invention realizes by the following technical solutions: a kind of security protection switch, comprise base and be fastened on cover plate on the base, switch pin, contact chip and button assembly are set in the described base, described switch pin vertically is arranged in the base and bottom protuberate basic unit bottom.Described button assembly comprises that the upper end stretches out in the press section of cover plate, establishes spring in the press section, and described contact chip is fixed in the side, press section, and is suitable with switch pin top; Press the press section, the press section drives contact chip to lower slider, the surface of the switch pin of contact chip surface sliding contact two correspondences.

Preferably, described contact chip is provided with second contact site that is used for first contact site that contacts with the first switch pin and is used for contacting with the second switch pin, on described first contact site and second contact site a plurality of contact feets is set respectively.

Preferred, described press section opposite side is provided for responding to the shell fragment of push action, in the base inner wall correspondence groove is set.

Preferred, the press section stretches out in the cover plate part and is provided with dust proof member on the described cover plate.

Concrete, both sides, described press section are provided with mounting panel respectively, and described contact chip and shell fragment are individually fixed on two mounting panels.

Compared with prior art, the present invention has following remarkable result: this switch adopts the face way of contact to substitute the some way of contact of original push switch, be applied to be in for a long time on the fire protection warning device of user mode not, effectively avoid make and break contact portion the problem that foreign matter causes switch failure to occur, switch can reliably contact when guaranteeing to use under the state of emergency; And adopt the contact of slidingtype, run into when dust is arranged also and can further guarantee the long-term not validity of appraxia of product owing to the slip of the contact dust that staggers; Simultaneously on each contact site a plurality of contact feets are set, can significantly improve reliability of products with respect to the switch of a contact.

Description of drawings

Fig. 1 is a sensitive switch contact structure schematic diagram of the prior art;

Fig. 2 is a security protection construction of switch exploded perspective view of the present invention;

Fig. 3 is a security protection switch overall schematic of the present invention.

Embodiment

For the ease of it will be appreciated by those skilled in the art that the present invention is further described in detail below in conjunction with accompanying drawing and embodiment.

As Fig. 2,3, be security protection switch specific embodiment structure chart of the present invention.Disclosed security protection switch has a base 1 and a cover plate 2, parts such as switch pin 11, contact chip 12 and button assembly 13 are set in the base 1, general switching tube footnote is moulded in base and bottom protuberate basic unit bottom, the base both sides are provided with button bit 110 respectively, cover plate 2 two ends are provided with the button hole 20 that cooperates with this button bit respectively, cover plate 2 is fastened on the base 1 by button hole 20, and button assembly 13 upper ends stretch out in cover plate 2.During operation, drive contact chip 12 by button assembly 13 and slide in base, contact chip 12 contact-making switch pin ones 1 are connected the switch pin.

131 upper ends, press section of button assembly 13 stretch out in cover plate 2, establish spring 130 in the press section 131, and contact chip 12 is fixed on 131 sides, press section, and are suitable with switch pin top; Press section 131 opposite sides are provided with shell fragment 132, in base 1 inwall correspondence groove 133 are set.

Press press section 131, the press section drives contact chip 12 to lower slider, the surface of the switch pin 11 of contact chip 12 surperficial sliding contact two correspondences.When pushing, shell fragment 132 also along base inner wall as lower slider, when sliding into groove 133 places, can embed groove 133, the operator is had significantly pushes the feel that puts in place.The fit structure of this shell fragment and groove also can adopt other modes to realize.

Have on the contact chip 12 on first contact site 121 that contacts with the first switch pin and second contact site, 122, the first contact sites 121 that contact with the second switch pin and second contact site 122 a plurality of contact feets are set respectively.Be set to two contact feets in the present embodiment, assurance contact chip 12 fully contacts with the switch pin.

In the present embodiment, 131 both sides, press section are provided with mounting panel 133,134 respectively, are used for stable contact chip 12 and the shell fragment 132 installed.

In the present embodiment, press section 131 stretches out in cover plate 2 parts and is provided with dust proof member 3 on the cover plate 2, and dust proof member 3 is a pot shape, and back-off is in cover plate 2, and dust proof member 3 tops are exposed in 131 upper ends, press section, are convenient to operation.This dust proof member 3 can prevent effectively that the gap that dust, foreign material stretch out the hole by press section 131 from entering switch inside, guarantees the reliability of switching manipulation.

The preferred version that the foregoing description is realized for the present invention; and indefiniteness is exhaustive, and the present invention can also have other variations under same idea, need to prove; without departing from the inventive concept of the premise, any conspicuous replacement is all within protection range of the present invention.

Claims

1. security protection switch, comprise base (1) and be fastened on cover plate (2) on the base (1), it is characterized in that: switch pin (11), contact chip (12) and button assembly (13) are set in the described base (1), and described switch pin vertically is arranged in the base and bottom protuberate basic unit (1) bottom;

Described button assembly (13) comprises that the upper end stretches out in the press section (131) of cover plate (2), establishes spring (130) in press section (131), and described contact chip (12) is fixed in side, press section (131), and is suitable with switch pin top; Press press section (131), the press section drives contact chip (12) to lower slider, the surface of the switch pin (11) of surperficial sliding contact two correspondences of contact chip (12).

2. security protection switch according to claim 1, it is characterized in that: described contact chip is provided with second contact site (122) that is used for first contact site (121) that contacts with the first switch pin and is used for contacting with the second switch pin, on described first contact site (121) and second contact site (122) a plurality of contact feets is set respectively.

3. security protection switch according to claim 2 is characterized in that: described press section (131) opposite side is provided for responding to the shell fragment (132) of push action, in base (1) inwall correspondence groove (133) is set.

4. security protection switch according to claim 3 is characterized in that: both sides, described press section (131) are provided with mounting panel (133,134) respectively, and described contact chip (12) and shell fragment (132) are individually fixed on two mounting panels.

5. security protection switch according to claim 4 is characterized in that: the last press section (131) of described cover plate (2) stretches out in cover plate (2) part and is provided with dust proof member.

6. according to the security protection switch described in the claim 5, it is characterized in that: described base both sides are provided with button bit (110) respectively, and cover plate (2) two ends are provided with the button hole (20) that cooperates with this button bit respectively.